Gromet.



W. A. YOUNG.

GROMET.

APPLICATION FILED JUNE 14. m1.

1,256,419. Patented Feb. 12,1918;

k WITNESSES r p re WILLIAM ANDREW YOUNG, OF NEW YORK, N. Y.

Specification of Letters Patent. Patented Feb. 12, 1918.

Application filed. June 14, 1917. Serial No. 174,709.

To all whom it may concern Be it known that I, \VILLIAM A. YOUNG, a citizen of the United States, and a resident of the city of New York, Astoria, borough of Queens, in the county of Queens and State of New York, have invented a new and Improved Gromet, of which the following is a full, clear, and exact description.

Among the principal Objects which the present invention has in View are: to strengthen the construction of gromets; to increase the resistance to the abrasion to which gromets are subjected in service; to reduce the time factor in the construction of gromets, and to reduce the cost of gromets of the character shown.

Drawings.

Figure 1 is a detail View showing a skein from which the gromet is constructed in its initial condition. arranged as in accordance with the first step of the operation;

Fig. 2 is a detail of the same. showing the condition to which the skein is reduced in accordance with the second step of the operation;

Fig. 3 shows a further development of the operation, disclosing the third step therein;

Fig. 4 shows the fourth step in the construction of the gromet;

Fig. 5 shows a completed gromet.

Description.

As shown in the drawings, and particularly in Fig. 1 thereof, skeins of fiber are roughlv carded to form a loose rope strand; as in the manufacture of rope the strand is rolled clockwise or forwardly; when the strand is twisted sufficiently close it is bent to form at the end a loop 10: the loop 10 and the extensions of the strands are allowed to wrap one on the other to form a single rope tw st 11.

The body of the twist 11 is extended through the loop 10. as shown best in Fig. 3 of the drawings. and is drawn therethrough until the diameter of the circle formed thereby accords with the specification or size set for the manufacture of the gromet; the loop 10 is then contracted upon the twist to maintain the size of the gromet while the free end of the twist is rolled more closely, the roll being as indicated clockwise or forward; as the free end is twisted or rolled, it is wrapped on the body of the twist forming the initial circle; care is exerted to wrap the free end to said body in a contra-clockwise direction or backward. As a result of this method of twisting and wrapping, the wrapped portions react on each other to close or tighten the wrap imparted thereto. It will be observed that the method produced in wrapping the free end of the strand or twist on the previously disposed body is substantially the same as that produced in the manufacture of rope, viz., the strand is twisted clockwise and wrapped contraclockwise.

As shown in Fig. 4, the wrapping of the free end about the body forming the original ring continues. \Vhen in the course of operation the wrap reaches the loop 10, care is exerted to treat t e loop as one of the double strands of the first wrap. In practice a third wrap is usually given to the gromet, the twist of the third wrap being disposed between the bodies of the first wrap. In the second wrapping the practice above noted of twisting the strand clockwise and wrapping it contra-clockwise is produced. 'When the third wrap reaches the loop 10 the free end of the strand is thr aded between the wraps forming the body of the gromet. much in the manner produced in splicing ro e. If one insertion of the freeend through the convolutions of the rope is not deemed sufficient. the tie may be strengthened by passing said free end through another convolution.

At the end of the operation it will be found a perfect rope-like circular structure, as seen in Fig. 5. is formed. the fibers of the strands of which are intermittingly arranged as to form a relatively hard and strengthened construction.

In service. the gromet is dipped or soaked with lead. creosote or bituminous cement. as the case mav be, prior to placing it in service position. The service of gromets constructed and arran ed in accordance with the above d scription corresponds with the use of a gasket where the joint above a bolt is to be sealed. Usually one or more washers are placed on one or both sides of the gromet and the surface nut is screwed thereupon; when the nut is turned up to the final limit a frictional pull is exerted upon the washer and upon the gromet thereover: this operation tends to break down the structure of the gromet rending the fibers of which it is composed; it is to resist this strain that the ropelike body herein described is formed.

Claim: .Wsaidgromet being formed by Winding said A gromet comprising, a dl s rope twistttwo or more times upon itself and ring, said ring being constructed from a onabout sziid loop," the Wrapping being ar- 16 tinuous loosely twisted strand. said stmnd-c-ranged to expose and incorporate said loop I 5 being doubled upon and twisted upon itself. in the composed body of the gromet.

1 to form arloopethrcugh Whichthe freecnd of the twist is extended, and the body of WVILLIAM ANDREWV YOUNG.

, Copies 02 this patent maybe obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

